Open Access
Discovery of an Unusual Optical Transient with the Hubble Space Telescope
Kyle Barbary,Kyle S. Dawson,Kouichi Tokita,Greg Aldering,Rahman Amanullah,Natalia Connolly,Mamoru Doi,L. Faccioli,Vitaliy Fadeyev,A. S. Fruchter,G. Goldhaber,A. Goobar,Alexander Gude,X. Huang,Yutaka Ihara,Kohki Konishi,M. Kowalski,C. Lidman,J. Meyers,Tomoki Morokuma,Peter Nugent,Saul Perlmutter,David Rubin,David J. Schlegel,A. L. Spadafora,N. Suzuki,H. Swift,Naohiro Takanashi,R. C. Thomas,Naoki Yasuda,Supernova Cosmology +30 more
- Vol. 213
TLDR
In this article, the authors present observations of SCP 06F6, an unusual optical transient discovered during the Hubble Space Telescope Cluster Supernova Survey, which brightened over a period of ~100 days, reached a peak magnitude of ~21.0 in both i_775 and z_850, and then declined over a similar timescale.Abstract:
We present observations of SCP 06F6, an unusual optical transient discovered during the Hubble Space Telescope Cluster Supernova Survey. The transient brightened over a period of ~;;100 days, reached a peak magnitude of ~;;21.0 in both i_775 and z_850, and then declined over a similar timescale. There is no host galaxy or progenitor star detected at the location of the transient to a 3 sigma upper limit of i_775 = 26.4 and z_850 = 26.1, giving a corresponding lower limit on the flux increase of a factor of ~;;120. Multiple spectra show five broad absorption bands between 4100 AA and 6500 AA and a mostly featureless continuum longward of 6500 AA. The shape of the lightcurve is inconsistent with microlensing. The transient's spectrum, in addition to being inconsistent with all known supernova types, is not matched to any spectrum in the Sloan Digital Sky Survey (SDSS) database. We suggest that the transient may be one of a new class.read more
Citations
More filters
Journal ArticleDOI
The Environment of M85 optical transient 2006-1: constraints on the progenitor age and mass
Eran O. Ofek,Shrinivas R. Kulkarni,Arne Rau,Stephen Bradley Cenko,Eric W. Peng,John P. Blakeslee,Patrick Cote,Laura Ferrarese,Andrés Jordán,Simona Mei,Thomas H. Puzia,Larry Bradley,Daniel Magee,Rychard Bouwens +13 more
TL;DR: In this article, a lower limit of ~50 Myr on the age of the youngest stars at the location of the progenitor that corresponds to a mass of <7 solar mass was established.
Journal ArticleDOI
SN 2017egm: A Helium-rich Superluminous Supernova with Multiple Bumps in the Light Curves
Jiazheng Zhu,Ning Jiang,Subo Dong,Alexei V. Filippenko,Richard J. Rudy,Andrea Pastorello,Chris Ashall,S. Bose,R. S. Post,D. Bersier,Stefano Benetti,Thomas G. Brink,Ping Chen,Liming Dou,Nancy Elias-Rosa,Peter Lundqvist,Seppo Mattila,Ray W. Russell,Michael L. Sitko,Auni Somero,Maximilian Stritzinger,Tinggui Wang,Enrico Cappellaro,Morgan Fraser,Erkki Kankare,Sean M. Moran,S. J. Prentice,T. Pursimo,T. M. Reynolds,Wei Zheng +29 more
TL;DR: In this article , the authors classified SN 2017egm as a member of an emerging population of helium-rich superluminous supernova (SLSN-Ib) and analyzed high-cadence ultraviolet, optical, and near-infrared light curves spanning from early pre-peak to late phases (∼+300 days).
References
More filters
Journal ArticleDOI
A synthetic view on structure and evolution of the Milky Way
TL;DR: In this article, new constraints on evolution parameters obtained from the Besancon model of population synthesis and analysis of optical and near-infrared star counts are presented, in agreement with Hipparcos results and the observed rotation curve.
Journal ArticleDOI
The keck low-resolution imaging spectrometer
J. B. Oke,Judith G. Cohen,Michael A. Carr,John Cromer,A. Dingizian,Frederick H. Harris,S. Labrecque,Richard Lucinio,W. A. Schaal,Harland W. Epps,J. Miller +10 more
TL;DR: The Low Resolution Imaging Spectrometer (LRIS) for the Cassegrain focus of the Keck 10-meter telescope on Mauna Kea is described in this paper, which has an imaging mode so it can also be used for taking direct images.
Journal ArticleDOI
Gravitational microlensing by the galactic halo
TL;DR: A simple model of microlensing by massive objects that might be present in the halo of the Galaxy is presented in this article, where it is shown that in any nearby galaxy one star out of a million is strongly microlensed by a "dark" object located in the Galactic halo, if the hale is made up of objects more massive than about 10 to the -8th solar mass.
Journal ArticleDOI
Drizzle: A Method for the Linear Reconstruction of Undersampled Images
Andrew S. Fruchter,Richard Hook +1 more
TL;DR: In this article, a variable-pixel linear reconstruction (VPLR) method was proposed for linear reconstruction of an image from under-sampled, dithered data, which preserves photometry and resolution, weight input images according to the statistical significance of each pixel, and removes the effects of geometric distortion both on image shape and photometry.
Journal ArticleDOI
Luminous Supernovae
TL;DR: High-resolution spectroscopy of the supernova PTF 11kx is reported, which was detected on 26 January 2011 by the Palomar Transient Factory survey, and the data suggest a red giant star companion whose material got transferred to the white dwarf.